Klaas Poortema

Research output

Research output per year 1990 1990 1991 1992 1993 1994 1995 1996 1999 1999

• 5 Report
• 4 Article

Research output per year

Research output per year

Search results

• 1999

  On modelling overdispersion of counts

  Poortema, K., 1999, In: Statistica Neerlandica. 1999, 53, p. 5-20 16 p.

  Research output: Contribution to journal › Article › Academic › peer-review
  43 Citations (Scopus)

  1 Downloads (Pure)
• 1996

  On modelling overdispersion of counts

  Poortema, K., 1996, Enschede: Universiteit Twente. 22 p.

  Research output: Book/Report › Report › Professional

• 1995

  Distributional Inference

  Kroese, A. H., van der Meulen, E. A., Poortema, K. & Schaafsma, W., 1995, In: Statistica Neerlandica. 49, 1, p. 63-82 20 p.

  Research output: Contribution to journal › Article › Academic › peer-review

  Open Access

  File

  • Loss Function 100%
  • Inference 80%
  • Equivariance 68%
  • Risk Function 62%
  • Unbiasedness 62%
  9 Citations (Scopus)

  267 Downloads (Pure)
• 1994

  Toeristische reclame. Herinneringseffecten van emotionele folderteksten

  Goossens, C. F. & Poortema, K., 1994, In: Massacommunicatie. 22, 3, p. 168-185 18 p.

  Research output: Contribution to journal › Article › Academic

• 1993

  Estimation in a growth study with irregular measurement times

  Poortema, K., Tamminga, R. Y. J. & Schaafsma, W., 1993, In: Statistica Neerlandica. 47, 2, p. 89-95 7 p.

  Research output: Contribution to journal › Article › Academic › peer-review

  File
  136 Downloads (Pure)
• 1992

  On Estimation and testing in poisson regression models with over-dispersion

  Poortema, K., 1992, University of Twente, Faculty of Mathematical Sciences. 14 p. (Memorandum Faculty of Mathematical Sciences; no. 1083)

  Research output: Book/Report › Report › Professional

• 1991

  A two-stage estimator for generalized linear models with nonconstant dispersion parameter

  Poortema, K., 1991, University of Twente, Faculty of Mathematical Sciences. 13 p. (Memorandum Faculty of Mathematical Sciences; no. 1012)

  Research output: Book/Report › Report › Professional

• 1990

  Estimation in a growth study with irregular measurement times

  Poortema, K., Tamminga, R. Y. J. & Schaafsma, W., 1990, University of Twente, Faculty of Applied Mathematics. 14 p. (Memorandum Faculty of Applied Mathematics; no. 852)

  Research output: Book/Report › Report › Professional

• Estimation of expectations and covariance matrices with linear structure

  Poortema, K., 1990, University of Twente, Faculty of Applied Mathematics. 28 p. (Memorandum Faculty of Applied Mathematics; no. 866)

  Research output: Book/Report › Report › Professional